From 1880 to 1885, Hermann Ebbinghaus ran a study about the memorisation of nonsense syllables, such as "WID" and "ZOF" by repeatedly testing himself after various time periods and recording the results. He plotted these results on a graph creating what is now known as the "forgetting curve".

Perhaps the most important discoveries are those which relate to the appropriate distribution of the periods of study...Acts of revision should be spaced in gradually increasing intervals, roughly intervals of one day, two days, four days, eight days, and so on.

The forgetting curve hypothesizes the decline of memory retention in time. This curve shows how information is lost over time when there is no attempt to retain it.

Murre and Dros present a successful replication of Ebbinghaus’ classic forgetting curve from 1880 based on the method of savings. The forgetting curve has indeed been replicated and that it is not completely smooth but most probably shows a jump upwards starting at the 24 hour data point.

The speed of forgetting depends on a number of factors such as the difficulty of the learned material (e.g. how meaningful it is), its representation and physiological factors such as stress and sleep. Furthermore higher original learning also reduces forgetting. The rate differs little between individuals.

Spitzer tested 1939 the effects of a type of spaced repetition with over 3600 students who were learning science facts and showed that spaced repetition was effective.

Spaced practice is a feasible and cost-effective way to improve the effectiveness and efficiency of learning, and has tremendous potential to improve educational outcomes.

Memory formation becomes more effective with longer inter-stimulus intervals between training sessions because of decreasing temporal overlap between successive, short-lived learning traces.

I want every girl in the world to pick up a guitar and start screaming.

Everyone I tell that I had an aneurysm always says, 'Oh, my cousin died from that.' Well, I didn't, so I'm amazed. I was in a wheelchair, and I had to go to rehab. And now I'm walking!

Our goal is to shrink government to the size where we can drown it in a bathtub.

Marriages that last are with people who do not live in Los Angeles.

Negative thoughts stick around because we believe them, not because we want them or choose them.

The Olympics are a world apart from racing for a record. You put out of your mind pretty much what anyone else doing in the race.

We need affordable space travel to inspire our youth, to let them know that they can experience their dreams, can set significant goals and be in a position to lead all of us to future progress in exploration, discovery and fun. Thanks to the X Prize for the inspiration.

When I was in high school, I earned the pimple award and every other gross-out award.

I don't have a daily routine, beyond brushing my teeth. It changes every day.

I was never really a big presence in the home.

I work to create systems that can accurately detect pandemics early, determine their likely importance, and, with any luck, crush those that have the potential to devastate us.

Trust your team. Let others do their work so that you may concentrate wholly on doing your own.

I wander around, get the lay of the land and try to imagine what kind of people would have lived there in that historical period. What would they eat? What kind of clothing would they wear? How did they shelter themselves? How did they get around?

We're human beings, and we want stories. We're always going to be entertained and have our emotions touched by humanity and by things that we recognize in our own lives. So whilst every now and again we'll be happy to watch a bubblegum film, it's never gonna be the only things that get made.

I have a very musical family from my Scottish roots.

The fact is, we need markers in life, whether we subscribe to a religion or not. And the major holidays, such as Christmas, serve to remind us of the turning world.

When one has tasted watermelon, he knows what the angels eat.

The only way I was going to be funny was if I was myself, and either you liked it, or you didn't. Either you got on my train, or you didn't. Freeing myself of this idea that I had to fit a certain mold was when I was able to be my funniest.

Well, the chairman of Federal Reserve just made his move to rescue Barack Obama. We're gonna have QE3. We're gonna print some more money.

I feel like there's a witch hunt by some film sites and people that immediately disregard something if it shows any sort of influence.

The Next Computer The hardware makes it a PC the software makes it a workstation the unit sales makes it a mainframe.

A fresh mind keeps the body fresh. Take in the ideas of the day drain off those of yesterday. As to the morrow time enough to consider it when it becomes today.

I'm not just a model who plays volleyball, or a volleyball player who supports herself modeling. I'm a female athlete personality.

I will say, in open adoption, all these choices you make about race, about the amount of mental illness you can deal with, about special needs and physical maladies, you have to lay all this out there before you know anybody's story.